Interchangeable air-brush



R. F. HAMAKER AND W. H.- VIRGIN. INTERCHANGEABLE AIR. BRUSH.

APPLICATION FILED NOV. 12. I918.

Patented Mar. 9, 1920.

u n I Z70, I noemtow 1 provements in that class of inventions known UNITED STATES PATENT, OFFICE,

RUDOLPH r. ZI-IAMAKER Ann WILLIAM H. VIRGIN, or NEW ORLEANS, ouisiana.

INTEBCHANGEABTJE AIR-BRUSH.

Specification of Letters Patent.

Application filed November-12, 1918. Serial No. 262,157;

1 0 all whom it may concern: I

Be it known that we, RUDOLPH F. HAM,-

in the parish of Orleans and State of Louisiana, have invented certain new and useful Improvements in Interchangeable Air-Brushes, of which the following is a specification. V

This invention comprehends generally imas coating and more particularly has reference to an interchangeable air brush.

It is theprimary aim and object of the present invention to provide a device designed for spraying liquid colors, dry

metallic powders, etc., and embodies generally a holder in which may be detachably fitted either a liquid spraying nozzle or a powder spraying nozzle, while mounted in i the handle and communicating with a supply of air under pressure, is manually operable valve means for controlling the-passage of air to the handle and the nozzle for the effective spraying of the material by the nozzle which is fitted in the holder or handle.-

It is an additional object'oi. this invention. to provide a device of the above mentioned character wherein the powder spraying nozzle is of novel construction and 1s designed with a'detachable connection between the nozzle body and thepowder holder so i that a'holder containing any desired color I may be connected ,Jtothe nozzle body.

The invention also embraces the provision of a deviceof the above mentionedcharacter whereinthe spraying nozzles are provided with main valve means for controlling the spraying action, and this valvemeans is primarily designedto regulate the flow of the color or powder.

" It is .a morespecific object of the present invention to provide' the powder spraying nozzle with an auxiliary air passage designed to removably receive, a valve \controlled auxiliary nozzle which is also arrangedin the color holder so as to assist in the movement of the color toward the outlet of the main nozzle and at the same time;

serves to lock the holder against displacement. i

l Among the other aims and objects of this invention may beurecited the provision of -a ydev ice of'the' abovementioned character whereinthe number' ofparts; arewfew, the 7 construction simple, the cost of vproduction low, and the'eflic'iencyhigh, v v

The improvements in the details and. arrangement of parts will be apparent from aninspection of the vaccompanying drawings, in connection with the specific description hereinafter contained, and wherein the preferred embodiment of the invention. is disclosed for the purpose of imparting a full understanding of the invention.

Patented 'Mar. 9, 1920. v

The invention is clearly illustrated in the accompanying drawings, in which:

Figure 1 is a longitudinal sectional view of the improved device with thedetachable powder spraying tip or nozzle shown accompanying drawings, there is provided a' handle l'preferably having a tubular body one end of which is closed while the other end is open and adapted to receiveeither a powder containing tip generally designated- 2 or the liquid spraying tip generally designated 8. Cooperating with-these tips is the improved valve means indicated in its entirety by'the numeral 4, designed primarily for COIltI'OlliIlg the passage of compressed air to and through the handle and through the tip connected tothe-handle v The valve means,,preferably consists of a casing composed of spaced sections 5 and 6 mou-ntedin opposed; relation in the handle and preferably formedintegral therewith. The section 5 is formed at its inner end with an opening aboutwhich is provided-a Valve seat 7 while a transverse bridge 8 is formed at the outer end of the section 5. A valve stem 9 is slidably mounted through both'of a head 10 which is positioned in the section 5 for coacting with the seat 7 w-hile also disposedabout the stem isa coiled expansion spring 11 positioned inthe; section 5 vand -the'sections through the bridge and carries having its respective endsibearingagainst.

.the valve head 10 and the bridge 8;;A knob "12 is connected tothe outer .projectingend of vs em ili ed p essi n b t s em againstuthe tension of, the spr ng. 'ior Op g .th a' e wa w c mpresedai i communicating with the chamber 18.

to pass through the section 5 from a supply tube 13, which is connected to the section 5, and enter the handle and then pass through and out of the tip or nozzle which is connected to the handle. Packing material 14 may be mounted in the section 6 and held in position by a packing gland 15 to prevent the escape of the air.

The improved detachable tip or nozzle for spraying dry or powdered colors in the present instance may be saidto consist of a body 14 of a conical configuration forming a main spraying nozzle, the inner portion of which is detachablyengaged with the outer end of the handle preferably through theinstrumentality of threads 15, while interiorly the body is Et'ormed with a transversely extending and longitudinally inclined partition 16 tern'rinates near the outer open end and divides the body into a lower air chamber 17 and an upper color chamber 18. The inner end wall 19 of the body is formed with acentral aperture 20, pro

jeeting inwardly therefrom is a spout or nozzle 21, which directs the air from the handle toward the outlet opening in the body or main nozzle 14. A holder generally designated 22 is now employed and is de signed to contain the dry or powdered colors and constructed so as to detachably engage the body and communicates with the chamber 18. This holder preferably consists of a body from the-lower end ofwhich issues a threaded neck 23 for detachably engaging the threaded collar 24, which in turn is formed about an opening in the body 14 and inner surface of the neck is restricted and arranged in a conical form as at 25 to fa cihtate ieedmg of the powder to the chamher 18 while a filler cap 26 is detachably mounted on the top of the body of the holder 22. It isjol course apparent that several of these holders 22. may be used in conjunction with one body 14, for containingvarious colors of powder, as is apparent. To assist in the feeding of the powder toward the main outlet 27 in the body 14, a tube 28is formed integralwith the body being led from the tube or secondary nozzle 2111s shown at 29 and projects through and above the inner portion of the body 14 while the upper pro ect ng portion is preferably curved to conform to the curvature of the holder 22.

1 of conical form and having openings therein for communicating with the tube so that air may pass from the tube into the holder and V act against the; powder therein; A manually adjustableneedle valve 33 is mounted'in'the The spout 32 to regulate the passage of air. In addition, it is to be apparent, that the spout serves as a means for locking the holder 22 against accidental turning movement, thereby insuring of an efi'ective rigid connection between the component parts forming the tip or nozzle 2. I

lVith a'view toward providing the main valve means for controlling the spraying action and regulating the amount of powder used, a. tubular casing 34 projects from the body 14 being preferably integral therewith and positioned opposite to the valve seat 35 provided at the outlet 27 Adjustably mounted in this casing is the stem 36 of a needle valve 37 arrangedto coact with the seat 35 andthis stem is adjustable desirably through the instrumentality of a knob 38 carried atthe outer projecting end thereof.

clined partition 42, the inner end oi which is joined with the lower edge of theend walls 40 and the inner walls of the body providing-in effect a spout or nozzle 43 through which air under pressure passes. H

The outer end of the partition 42 of course, termlnates in an op'emnge44wh1'ch lspositioned beneath another opening 3 45, form- 3 ing a valve seat, and also provided by the partitio1r42., In addition, this partition forms a color chamber 46 with which is d etachably connected the liquid color holder 47. This holder isin the formof a cuplilte body .having'aneek 48 issuing from the bottom thereol and threaded for removable engagement with the upstanding threaded collar "49," the latter communicating with the color chamber while a filler cap 50 serves to removably close the holder 47 being detachably engaged with the upper thereof.

The main valve. means for eontrolling the How of liquid from the chamber 46 through the 0penings45, desirablyconsists of a tuedge bular casing 51int'egral with and projecting above the body 39 and dlsposed 1n ahnement with the valve seat provided by the opening 45. A needle valvestem 52 is adjustably mounted asat 53 in the casing so that the point54 will coact with the seat while a knob 55 is carried by the'o'uter end ofthe stem to regulate the adjustment thereof. In

using this'form of tip or nozzle, the valve is adj u'sted' so that to regulate the flow through the openings, while the air under-pressure which passes "through the secondary spout 43 which terminates in the opening etheneath the opening 45 will insure of the projecting of the liquid in a spray upon a surface. v

In using the arrangement shown 1n F1gs.1

and 2, when the valve 10 is open, air under to consequently assist in the movement of a the powdertoward the outlet 37 It is believed in View of the foregoing description that a further detailed description of the operation of the invention is entirely unnecessary. Likewise, it is believed that the advantages of the invention will bereadily apparent.

Still further embodiments of the invention than those herein especially defined may be resorted to as conditions or preference may dictate, may be in keeping with the hereto appended claims.

Having thus fully described our invention, what is claimed as new and desired to be secured by Letters Patent, is:

.1. In a device of the character described, a conical shaped body adapted for detachable engagement with an air supplying member, having an apertured inner end wall and a partition dividing the body into a lower air chamber and an upper color receiving'chamber, a secondary spout leading from the apertured end wall and projecting .into the body for directing compressed air to the air chamber toward the outlet end of the body,,a color holder detachably connected to the body and communicating with the color receiving chamber, manually operable valve meansmounted 1n the body for regulating the passage of color from the body and for controlling the spraying action of the nozzle, an air conducting tube leading from the secondary nozzle'and projecting through and above the bodv and formed with opposed openings near the outer end, the color holder having an opening therein adapted to be reg-- istered with the openings ln'the tube and a valve controlled spout fitted through the openings projecting into the holder and communicating with the tube so that the air passing therethrough will facilitate the feed ing of the color and said spout incidentally serving as a lock for preventing accidental disengagement of the holder from the body. 2. In adevice of the character described,

in combination, a hollow handle, a spraying nozzle detachably fitted in and communr' eating with the handle, a color holder in connection with. the nozzle, valve means for regulating passage of color through the noz zle, a valve casing carried by and communicating with the handle, a manually operable valve in the casing for controlling the passage of air into the handleand the nozzle,

,and a conduit leading from the nozzle to the color holder.

3. In a device of the character described, in combination, a hollow handle, a spraying nozzle detach-ably .fitted 1n and communicating with a handle,a color holder in connec-' tion with the nozzle, valve means for regulating passage of color throughthe nozzle, a valve casing carried by and communicating with the handle, a manually operable valve in the casing for controllingthe passage of air into the handle and the nozzle, a conduit leading from the nozzle to the color holder, and a valve arranged in said conduit for controlling communication between the latter and the color holder.

In testimony whereof we aflix our signatures hereto. I y

' RUDOLPH F. HAMAKER. WILLIAM H. VIRGIN. 

